[tbrownaw]

My library has quite a few games I haven't played, but most are from bundles that cost as much as or slightly less than the other bundle parts I actually did want. A couple are from friends posting keys from bundles, and then I got sidetracked by something before seeing if whatever game was actually as interesting as it sounded.

The only one I actually properly paid for and haven't played is Elden Ring. Because I got sidetracked for too long between buying it and finding out it wanted admin access (for some anti-cheat rootkit) to play at all rather than just to enable competitive online things I wasn't interested in. Which I didn't feel like doing on a machine that also had non-game stuff on it.

[Adverblessly]

I don't know if it still requires elevated privileges because I've played it on Linux, but if you used the Seamless Coop mod it disables EAC and uses the Steam API for multiplayer, so presumably won't require admin privileges. There's also er-patcher which I use to "fix" the framerate and comes with an option to disable EAC (and a few other nice features IMO).

[whatevaa]

There are mods to disable online play and anti-cheat with it.